622621472 has 54 divisors (see below), whose sum is σ = 1350719937. Its totient is φ = 282304000.

The previous prime is 622621463. The next prime is 622621499. The reversal of 622621472 is 274126226.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 373107856 + 249513616 = 19316^2 + 15796^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=17644.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1552472 + ... + 1552872.

Almost surely, 2^622621472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 622621472

622621472 is an abundant number, since it is smaller than the sum of its proper divisors (728098465).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

622621472 is an equidigital number, since it uses as much as digits as its factorization.

622621472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 414 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 622621472 is about 24952.3840945109. The cubic root of 622621472 is about 853.9020010512.

Multiplying 622621472 by its sum of digits (32), we get a square (19923887104 = 141152²).

622621472 divided by its sum of digits (32) gives a square (19456921 = 4411²).

Adding to 622621472 its reverse (274126226), we get a palindrome (896747698).

The spelling of 622621472 in words is "six hundred twenty-two million, six hundred twenty-one thousand, four hundred seventy-two".